Question

запишите частное в виде степени 1)(-9/7)^8÷(-9/7)^5 2)(1/17)^18÷(1/17)^17 3)х^21:х^7 4)d^24÷d^12​

Answer 1

Объяснение:

1)

$( - \frac{9}{7} ) {}^{8} \div ( - \frac{9}{7}) {}^{5} = \left(-\frac{9}{7}\right)^{3} =-\frac{729}{343}$

2)

$( \frac{1}{17} ) {}^{18} \div ( \frac{1}{17} ) {}^{17} =\left(\frac{1}{17}\right)^{1} =\frac{1}{17}$

3)

$x {}^{21} \div x {}^{7} = \frac{x {}^{21} }{x {}^{7} } = x {}^{21 - 7} = x {}^{14}$

4)

$d {}^{24} \div d {}^{12} = \frac{d {}^{24} }{d {}^{12} } = d {}^{24 - 12} = d {}^{12}$